Improvement in bolt-heading dies



UNITED STATES PATENT @FEIE PHILIP ELEY, OF NEW YORK, N. Y., ASSIGNOR, BYMESNE ASSIGNMENTS, TO CHARLES WALLIOH, GEORGE HIOOOK, AND ALEXANDERYOUNG.

IMPROVEMENT IN BOLT-HEADING DIES.

Specification forming part of Letters Patent N0. 113,280, dated April 4,1871.

I, PHILIP ELEY, of the city of New York,

in the county and State of New York, have Character and Object of thcIntention.

This invention relates to tools for heading bolts, spikes, Svc.; and itconsists in the combination of i a heading-box and side hammer with acertain new heading-plunger, by means of which bolts, spikes, Sac., maybe made by machinery in a more perfect manner` than is now done on theknownbolt-making machines.

The tools of bolt-making machines now in use are so constructed andoperated that they leave fins or projections at allthe parts of the boltcorresponding to that part of the set of tools where play or loosenessis produced between the tools or parts of the box in which the head isto be formed. This iin is on the top of the head of the bolt when theheadingplungcr is of the dimension of the head, and it works in a solidor fixed headboX. The iin, on the contrary, is formed on the side of thehead when the bolt is forged in a headbox formed of pieces openinglaterally.

The characteristic of my invention is the new heading-plunger, whosecross-section is such that it will t snugly in a half-box thecross-section of which is a counterpart of the half of the shape whichthe head of the bolt to be made is intended to retain when finished,while the opposite side is larger than the half of said shape, so thatthe said plunger will project over the head of the bolt on one halt' ofit, and, striking thereon, will beat down, upset, and crowd in any nwhich may have been left on the top of the head of the bolt by theaction of the plunger on the side where it slides and iits in theheading-boX.

This heading-plum ger I use in combination with a heading box or anviland a side hammer having suitable shaped end, to act as a swage on bothhalves of the side of the head of the bolt, as fully illustratedV by myldrawin g and further described.

Description of Dmwing.

Figure 1 represents an isometrical perspective view of my improved diesor tools for heading bolts by machinery, with part of a frame shown,simply to retain each member of the combination in its proper place, andone of the griping-dies removed, not to obstruct the view of the hammerand heading-plunger. Fig. 2 is a cross-section of my heading-plunger,heading-box, and slide, representing tools for making a round head to abolt. Fig. 3is a similar view of tools for making a square-head bolt,and Fig. 4 is also a similar view of tools iutended to shape asiX-corner-head bolt.

I have given these last three figures so as to illustrate clearly theprinciple upon which my invention is based, and not to limit myself' tothe exact shape of the heads there illustrated.

General Description.

F is the frame of the machine, which has to be built according to thedemand of oth er parts of the bolt-machine not illustrated here, and,therefore, which is only represented in my drawing as retaining in theirproper relative position and relations each of the tools forming the setor combination required for heading a bolt. A is one of thegriping-dies, the other one being removed, made and operated in any ofthe knownpmanners. B is the heading-anvil, having for cross-section aigure representing on one side a counterpart of one half of thecross-section of the head of the bolt to be forged therein. One part ofthis heading-anvil B acts as an anvil or swage, whereon one half of thehead of the bolt receives its shape, the balance acting as a slide forthe heading-tool P. H is a side hammer, the face of which is shaped soas to present a counterpart of one half of the head of the bolt, andwhich is combined and operated with the anvil B in such a manner as toform with it the full sides of a box or cavity for shaping the lateralpart of the head of the bolt. This hammer H is operatedv upon by anyappropriate mechanical device to give it the proper motion and action. Cis a slide for one half of the heading-plunger to play in, and which,therefore. presents a channel suitable to receive said plunger and actas a slide-box therefor, in combination with the slide part of the anvilB.

l? represents my improved heading plunger or hammer, the cross-sectionof which is such that one half will correspond and fit? upon one half ofthe head to be forged upon the bolt, While the other half is made largerthan the half of the head of the bolt projecting thereon, overhan gingsaid head of all th at partindicated in my drayvin g in Figs. 2, 3, and4. by the dotted lines, which indicate the shape of the head ofthe bolt,and the line of boundary of the cross-section of the slide-box G.

The end of' the heading-plunger P is made conca-Ve or at, as required,and, in fact, With any design intended to iinish the top of the head ofthe bolt 5 but in` all cases the plunger projects over on one half ofthe head ofthe bolt, in order that its action may destroy on that sideany tin which may be formed by the action of the other side of theplunger, Where it is shaped so as to slide inside of the headingbox B.

The griping-dies A A, the plunger P, and the hammer H are acted upon byany suitable mechanical devices to cause them to come into action at theproper time, each in turn, to do its Work, griping the bar, upsettingthe same, and swaging the head into shape and aft er these threeoperations are performed the bolt is turned one-quarter, onehalf,one-sixth, or any fraction of a turn, as the case may be, and the seriesof operations repeated, whereby a perfect head is obtained, free fromin's, and of an excellent finish.

Claim The combination of the stationary headinganvil B, stationary guideC, movable headingplunger P, and heading-hammer H with the griping-diesA, all arranged as and operating substantially in the manner specified,and for the purpose set forth.

PHILIP ELEY.

Witnesses:

JAMEs P. HARPER, Jr., H. GENGEMBRE HUBERT.

